Common initialization methods for a custom view in Objective C

commonInit.m

- (void)commonInit
{
    CGRect rect = self.frame;
    
    // Top Handle Drawing
    UIBezierPath* topHandlePath = [UIBezierPath bezierPathWithOvalInRect: CGRectMake(CGRectGetMinX(rect), CGRectGetMinY(rect), 8, 8)];
    [UIColor.hum_recordingColor setFill];
    [topHandlePath fill];

    // Bottom Handle Drawing
    UIBezierPath* bottomHandlePath = [UIBezierPath bezierPathWithOvalInRect: CGRectMake(CGRectGetMinX(rect), CGRectGetMinY(rect) + CGRectGetHeight(rect) - 8, 8, 8)];
    [UIColor.hum_recordingColor setFill];
    [bottomHandlePath fill];

    // Connecting Bar Drawing
    UIBezierPath* barPath = [UIBezierPath bezierPathWithRect: CGRectMake(CGRectGetMinX(rect) + 3, CGRectGetMinY(rect) + 7, 2, CGRectGetHeight(rect) - 14)];
    [UIColor.hum_recordingColor setFill];
    [barPath fill];
}

- (id)init
{
    if (self = [super init]) {
        [self commonInit];
    }
    
    return self;
}

- (id)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        [self commonInit];
    }
    return self;
}

- (id)initWithCoder:(NSCoder *)aDecoder
{
    if (self = [super initWithCoder:aDecoder]) {
        [self commonInit];
    }
    
    return self;
}